# 4 O R

> journal

**Wikidata**: [Q15760724](https://www.wikidata.org/wiki/Q15760724)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/4OR)  
**Source**: https://4ort.xyz/entity/4-o-r


## References

1. ERA 2010 journal list
2. Scopus
3. [Source](https://media.springernature.com/full/springer-cms/rest/v1/content/15226614/data/v7)
4. [Source](https://api.crossref.org/journals/1614-2411)
5. ISSN Portal
6. [Source](https://www.elsevier.com/products/scopus/content#4-titles-on-scopus)
7. BFI 2012 journal list
8. BFI 2019 journal list
9. OpenCitations Corpus
10. [Source](https://mjl.clarivate.com/search-results?issn=1619-4500)